Picker-stick check for looms



G. C. DAVIS PIGKEB STICK CHECK FOR LOOKS Filed Sept. 4, 1924 Patented Sept. 1, 1925.

GROVER G. DAVIS, OF CAMDEN, SOUTH CAROLINA.

PICKER-STICK CHECK FOR LOOMS.

Application filed September 4, 1924. Serial No. 735,940.

To all whom it may concern:

Be it known that I, Guovna C. DAVIS, a citizen of the the United States, residing at- Camden, in the county of Kershaw and State of South Carolina, have invented certain new and useful Improvements in Picker- Stick Checks for Looms, of which the following is a. specification, reference being had to the accompanying drawings.

This invention relates to picker stick checks for looms, and particularly to those checks wherein a spring is used to receive the impact of the picker stick, the check being mounted upon the lay beam of the loom.

'. The objectof my invention is to provide a very simple, strong, compact and effective check of this description. which may be read ily applied to the lay beam or readily removed therefrom and which is capable of being adjusted both as regards its position upon the lay beam and as regards the position of the spring housing or casing with reference to the. bracket or support upon which it is mounted to thereby control the action of the spring. I

l\:[y -'nvention is illustrated in the accompanying drawings wherein Figure 1 is a side elevation of my improved picker stick check showing a portion of the lay beam; y

Figure 2'is section on the line 2-2 of Figure 1; i

Figure 3 is 'a section on the line 3-:. of Figure 1;

Figure 4 is a Figure 1;

Figure 5 is a perspective view of one of the two sections of the body portion of the check;

Figure 6 is a like view of the other sec tion.

Referring to these drawings, it will be seen that my improved check comprises a bracket, designated at 10, having an upwardly extending flange 11 and a horizontally extending flange 12'. The upwardly extending flange is formed with a plurality of longitudinally extending slots 13 through which screws 14 pass holding the bracket to the beam A. The horizontal flange 12 is also formed with a pluralitycf longitudinally extending slots 16, and the under face of this flange 12 is formed with transverse corruga-tions 17 Coasting with the bracket and supported section on the line i---4 of thereby is a spring casing comprising a casting formed. to provide a base or attaching plate 18, the upper face of which is transversely corrugated to coact with the corrugations 17 and which is formed with a plurality of screw-threaded openings 19. Depending from this portion 18 is a flange or Web 20 which has a length equal to the length ofthe plate 18. This flange is laterally deflected at one point, as at 21, to form a spring chamber 22. One face of the depending flange 20 is rabbeted, as, at 3, to form a seat for a slide 24. Ext-ending over this face of the flange 20 and bearing against the slide is a covering plate heldin place to the flange 20 by means of screws 26.

The slide 24L has a length equal to nearly the length of the flange 20. and slides within the rabbet 23. On end of this slide is angularly bent, as at 27, and bears against a spring 28 disposed within the chamber 22. This spring is preferably a coiled compression spring and is shown as relatively light. The opposite end of the slide 24: is formed with an outwardly project-ing lug 29 having a leatherbuflier 30 upon its inner face, this buffer 30confronting the picker stick B,

In the use of this (lGVlC the bracket 10 is mounted upon the laybeam of the loom, 1

as illustrated in Figure 3, so that the flange 12 is disposed beneath the lay beam and just to one side of the slot. 0 through which the picker stick operates. The cushion 30 is disposed in the path of movement of the picker stick. It will be seen that when the: picker stick flies back it will swipe' against the cushion 30 and compress the spring 28 and thus the momentum of the picker stick will be checked and cushioned. The device is very simple and yet strong. The various parts, except the slide 24 and the covering plate, are cast. The bracket may be adjusted by means of the slots 13 and screws 14 upon the lay beam of the loom, and the body whichsupports the slide which! receives the impact of the picker stick may be adjusted upon the bracket, so as to bring the cushion 30 at the exact point where it is necessary to receive the impact of the picker stick and secure the proper cushioning effect of the spring.

Vhile I have illustrated a construction which I have found to be particularly effective for the purpose intended, I do not Wish to be limited thereto as it is obvious that the device might be modified in many respects without departing from. the spirit of the appended claims.

It will be seen that I have devised a check which gradually and resiliently brings the shuttle to a stop at the end of its throw or pick as the shuttle enters the box at the end of the lay, and furthermore that this action is positive and certain, bringing the shuttle to a stop without jar or injury to the picker stick. Furthermore, it will be seen that a picker stick check of the character described will always be in line with the picker stick and brings the shuttle to a stop without rebound, which rebound ordinarily will cause the loom to knockoff and, therefore, eliminates to a considerable extent the bending and breaking of the protection rod. With the ordinary leather check mostly used on looms, when the loom stops because of a broken filling or warp thread, then when the loom makes its last pick or throw, the picker stick will not make its full stroke and thus does not pull the leather check into position to check the shuttle on its return to the end of the lay, and when the operator again puts the 100m into motion the shuttle will be most likely to bounce into the shuttle box, causing the loom to knock off or slam. \Vith my construction, however, the shuttle and picker stick are checked positively as the shuttle enters the shuttle box at the end of the lay.

I claim: v

1. A picker stick check of the character described comprising a bracket angular in cross section to provide an attaching flan'ge and a supporting flange, the attaching flange being formed with slots whereby the bracket may be connected to the lay beam, of a loom, the supporting flange extending horizontally and having longitudinally extending slots, a spring housing having a plate confronting. the horizontal flange. of the bracket and having screws adapted toene gage through said slots of the bracket, the

spring housing being formed to provide a chamber and one face of the housing'being rabbeted to provide longitudinally extending guides upon either side of the spring chamber, a slide disposed against said rabbets and having at one end a lug projecting inwardly into said chamber and at the other end an outwardly projecting lug, a compression spring disposed within the chamber and bearing against the first named lug, a plate detachably mounted upon the outer face of the chamber and holding the slide in place, and a buffer mounted upon the second named lug oft-he slide.

2. A picker stick check of the character described comprising a bracketangular in cross section to provide an attaching flange and a supporting flange, the attaching flange being formed with slots whereby the bracket may be connected to the lay beam of a loom, the supporting flange extending horizontally and having longitudinally extending slots, a spring housing having a plate confronting the. horizontal flange of the bracket and having screws adapted to engage through said slots of the bracket, the spring housing being formed to provide a chamber and the one face of the housing being rabbeted to provide longitudinally extending guides upon either side of the spring chamber, a slide disposed against said rabbets and having at one end a lug projecting inwardly into said chamber and at the other end an outwardly projecting lug, a compression spring disposed within the chamber and bearing against the first named lug, a plate detach ably mounted upon the outer face of the chamber and holding the slide in place, and a buffer mounted upon the second named lug of the slide, the confronting faces of the bracket andfspring chamber having transversely ext-ending corrugations.

In testimony whereof I hereunto aflix my signature. T

, GROYER DAVIS. 

